Submersible pump



FIG. 1 is a top plan view of a submersible pump showing my new design;

FIG. 2 is an end elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an elevational view of the end opposite that is shown in FIG. 2;

FIG. 6 is an elevational view of the side opposite that is shown in FIG. 3; and

FIG. 7 is a perspective view thereof. 

The ornamental design for a submersible pump, as shown. 